Drain trap



May 27, 1930. J, E EHRET 1,760,126

DRAIN TRAP K Filed May 29, 1929 'Il l -A TTORNEX Patented May 27, 1930 JOHN E. EHRET, F BERKELEY, CALIFORNIA.

DRAIN TRAP Application filed May 29,

double drain trap which as a single simply constructed device will efficiently serve as a trap for a plurality of bath tubs or like receptacles and thereby provide for saving in time,

labor, material and plumbing costs as com` pared to installations requiring a separate drain trap for each tub or other receptacle to be drained.

Another object of the invention is to provide a double trap drain fitting of the character described which is constructed and arranged to positively prevent siphoning of the traps thereof.

Another object is to provide a drain trap of the character described which will not clog at ora-round the vent opening thereof nor in any way interfere with the proper ventingof the trap. v

AV further obj ect is to provide a drain trap of the character described in which provision is made for a novel and convenient interconnecting of two and more traps in order to save labor and material and reduce the costs of installation thereof.

The invention possesses other objects and features of advanta e, some of which, with the foregoing, will e set forth in the following description of the preferred form of the invention which is illustrated in the drawings accompanying and forming part of the specication. It is to be understood, however, that variations in the showing made by the said drawings and description may be adopted within the scope of the invention as set forth in the claims.

Referring to the drawing:

. Figure 1 is a sectional view showing one way of installing the device of my invention to serve two bath tubs.

Figure 2 is a side elevation of the trap of my invention.

Figure 3 is a sectional view taken on the plane of line 3-3 of Figure 2.

Figure 4 is a vertical section showing the intake ends of the traps.

In the present embodiment of my inven- 1929. Serial N0. 366,820.

tion the drain trap device 5 is lshown asinstalled to serve two bath tubs 6 and 7, the trap being located in wall or partition 8 which separates the rooms containing the bath tubs. A vent pipe 9 is connected with the trap 5 yas 1s customary in the art. A continuation waste line pipe 10 may be employed as shown in Figure 1 to connect the trap 5 with other traps, not shown, and which will be located on floors above the trap 5, whereby the installation of several traps will be simplified and the cost thereof reduced.

As here shown, the trap device 5 of my invention preferably comprises a substantially S shaped body which is cast to provide two U shaped trap chambers yor passages 12 and 13, a downwardly extending discharge passage 14 contiguous with certain ends of the trap passage, an upwardly extending vent passage 15 registering with the trap passages and an upwardly extending continuation waste line passage 16 registering anddisposed in line with the upper end of the discharge passage.

rlhe two trap chambers or passages 12 and 13 are formed by a wall or partition 17, the upper end Vof which extends into the vent passage 15. A similar web or portion 18 separates the passages 15 and'16 and is formed integral with an upper part of the partition 17. This wall is inclined toward the passage 16 so as to act as a deflector and direct the drainage from the lpipe 410 away from juncture of the discharge passage 14 and the trap passages 12 and 13. It will be noted that the passage 14 is provided with a laterally offset portion 19 which is curved'first outward and then inward on the outer side of the passage 14 about the upper end thereof. This offset, therefore, widens the discharge passage at and around the point where it joins with the passage 15 andthe traps 12 and'13. This arrangement, with the deflection of the drainage entering through the passage 16 prevents the creation of a suction action in the traps and therefore positively prevents siphoning of the traps and also prevents the discharge of the drainage into the traps.

The upper ends of the traps 12 and 13 farthest removed from the passageV 14 are paratively wide.

for the vent pipe 9 an'd'continuation pipe 10 v respectively, which hubs are formed integrally with the casting or body of the trap de# vice.

It is to be noted that the upper end oi the vent passage 15 is spaced several inches above the upper ends of thetrap passages 12 and 13 with both of which latter said vent passages communicates. Also, the vent passage is comand because of the extension of the partition into said passage, a Jfree and "unobstructed flow of drainage through the trap is insured and stoppage of the vent passage Idue to the accumulation of foreign matter at this point is positively prevented. Y f

It will thus be seen that I have provided a simply constructed, compact double trap drain fitting which may be easily installed for highly etcient use with two bath tubs or the like, and will eiiect an appreciable saving in material, labor and plumbing cost as compared with insallations requiring a separate drain trap device for each tub or like receptacle.

l. claim: l

i 1.V A. drain trap comprising a body meinber formed with a substantially U` shaped trap passage, a downwardly extending discharge passage joined with one end of the trap passage, a vent passage extending upward from a point or communication with the trap passage and two intake openings for the trap passage, a partition in Vsaid body member dividing said trap passage into two' trap chambers each oi' which is served by one ot said intake openings, said body member having Va continuation waste line passage leading into the upper end of the discharge passage, and a partition between said vent and waste passages having a laterally extend` ed portion at its lower end to serve as a detlector. e

2. A drain trap comprising abody member formed with a substantially U shaped trap passage, a downwardly extending discharge passage joined with one endof the trap passage, a vent passage extending upward from a point of communication with the trap passage and two intake openings for the trap passage, a partition in said body member dividing said trap passage into two trap chambers each of which is served by one of'said intake openings, said body niember having a continuation waste line passage therein leading into the upper end of the dis- By these arrangements,k

charge passage, and a partition between the vent and waste passages formed integral with the iirst named partition and having a laterally extended portion provided with an inclined face arranged to deflect the drainage stream entering the waste passage, away :trom the discharge ends of said trap cham- 3. A; drain trap comprising a body member formed with a substantially o shaped trap passage, a downwardly extending discharge passage joined with one end of the trap pas* sage, a vent passage extending upward from a point ocomniunication with the trap passage and two intake openingsrtor the trap passage and a partition in said body member dividing said Vtrap ps ssageYV into Vtwo trap chambers each of which is'served by one oi' said intake openings', said body member having a continuation waste line passage therein leading into theupper end oi the discharge passage, and means in said body for deilect= 1 ing the drainage discharged rom'said wastev line passage away from discharge ends of said trap chambers.

4E. A drain trap comprising a body member iormed with a substantially U shaped trap drainage stream entering through the waste line passage'away from said trapchambers.

5. A drain trap comprising a body member formed with a substantially U shaped trap passage, a downwardly extending discharge passage joined with one end of the trap passage, a vent passage extending up-V ward from a point oi' communication with the trap passage and two intake openings for the trap passage and a partition in said body member dividing said trap passageinto two trap chambers eachof which is served by one of said intake openings, said body member having a continuation waste line pas#` sage therein leading into the upper end of the discharge passage, said discharge passage being laterally enlarged at the upper end thereof. 1y ,Y

6. A drain trap'comprising a body member formed with a substantially U shaped trap passage, a downwardly extending discharge passage joined with oneend ci theorap passage, a vent passage extending upward from a point ot communication with the trap passage Vand two intake'openings for the trap passage izo and a partition in said body member dividing said trap passage into two trap chambers each of which is served by one of said intake openings, said body member having a continuation waste line passage therein leading into the upper end of the discharge passage, a partition between said vent and waste passages arranged to deflect the drainage stream entering through the waste line passage away from said trap chambers, said discharge passage being laterally enlarged and having the enlarged portion curved from its upper end rst outwardly and then inwardly and terminated at a point spaced upwardly from the lower end of the discharge passage.

In testimony whereof, I have hereunto set my hand at Oakland, California, this 17th day of May, 1929.

JOHN E. EHRET. 

